US2856818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective mirror coating
Assignee: Ohio Plate Glass Co
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Filing: 1954-07-27
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Granted: 1958-10-21
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Expires: 1974-07-27
Abstract
No abstract record available.
Inventors
- 👤 Paul T Woodberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:22
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/38; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/31641; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A MIRROR STRUCTURE COMPRISING A LIGHT-PERMEABLE BASE, A METALLIC REFLECTIVE FILM ON ONE SIDE OF SAID LIGHTPERMEABLE BASE, AND A VARNISH COATING ON SAID METALLIC REFLECTIVE FILM COMPRISING THE REACTION PRODUCT OF A ROSINPHENOL ALDEHYDE MODIFIED ALKYD RESIN AND A HIGHLY LEADED DRYING OIL, THE LEAD CONTENT OF THE RESULTANT REACTION PRODUCT BEING AT LEAST 10 PERCENT BY WEIGHT, CALCULATED AS LEAD OXIDE.
References Cited (Backward Citations)
US2081153A
Cited
GB437894A
Cited
US2103538A
Cited
US2101182A
Cited
US2142833A
Cited
US2595800A
Cited
US2699402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |